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568035b7 | 1 | /* Copyright (C) 2001-2013 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
ffeac417 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
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15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | #ifndef _SYS_MSG_H | |
7bf75551 | 19 | # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead." |
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20 | #endif |
21 | ||
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22 | #include <bits/types.h> |
23 | #include <bits/wordsize.h> | |
ffeac417 | 24 | |
7bf75551 | 25 | /* Define options for message queue functions. */ |
ffeac417 | 26 | #define MSG_NOERROR 010000 /* no error if message is too big */ |
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27 | #ifdef __USE_GNU |
28 | # define MSG_EXCEPT 020000 /* recv any msg except of specified type */ | |
29 | #endif | |
30 | ||
31 | /* Types used in the structure definition. */ | |
32 | typedef unsigned long int msgqnum_t; | |
33 | typedef unsigned long int msglen_t; | |
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34 | |
35 | ||
36 | /* Structure of record for one message inside the kernel. | |
7bf75551 | 37 | The type `struct msg' is opaque. */ |
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38 | struct msqid_ds |
39 | { | |
40 | struct ipc_perm msg_perm; /* structure describing operation permission */ | |
41 | __time_t msg_stime; /* time of last msgsnd command */ | |
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42 | #if __WORDSIZE != 64 |
43 | unsigned long int __unused1; | |
44 | #endif | |
ffeac417 | 45 | __time_t msg_rtime; /* time of last msgrcv command */ |
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46 | #if __WORDSIZE != 64 |
47 | unsigned long int __unused2; | |
48 | #endif | |
ffeac417 | 49 | __time_t msg_ctime; /* time of last change */ |
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50 | #if __WORDSIZE != 64 |
51 | unsigned long int __unused3; | |
52 | #endif | |
53 | unsigned long int __msg_cbytes; /* current number of bytes on queue */ | |
54 | msgqnum_t msg_qnum; /* number of messages currently on queue */ | |
55 | msglen_t msg_qbytes; /* max number of bytes allowed on queue */ | |
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56 | __pid_t msg_lspid; /* pid of last msgsnd() */ |
57 | __pid_t msg_lrpid; /* pid of last msgrcv() */ | |
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58 | unsigned long int __unused4; |
59 | unsigned long int __unused5; | |
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60 | }; |
61 | ||
62 | #ifdef __USE_MISC | |
63 | ||
64 | # define msg_cbytes __msg_cbytes | |
65 | ||
66 | /* ipcs ctl commands */ | |
67 | # define MSG_STAT 11 | |
68 | # define MSG_INFO 12 | |
69 | ||
70 | /* buffer for msgctl calls IPC_INFO, MSG_INFO */ | |
71 | struct msginfo | |
72 | { | |
73 | int msgpool; | |
74 | int msgmap; | |
75 | int msgmax; | |
76 | int msgmnb; | |
77 | int msgmni; | |
78 | int msgssz; | |
79 | int msgtql; | |
80 | unsigned short int msgseg; | |
81 | }; | |
82 | ||
83 | #endif /* __USE_MISC */ |